Box-making machine



H. A. DENMIRE.

BOX MAKING MACHINE.

APPLICATION FILED APR. M1920.

PatentedSept. 27, 1921.

2 SHEETS-$HEET 1.

H. A. DENMIRE'.

BOX MAKING MACHINE.

APPLICATION FILED APR. 9, 1920.

---1 v if V PatentedSept. 27,1921.

2 5HEETSSHEET 2.

UNITED STATES- EAROLD A. DENMIRE,

COMPANY, OF AKRON, 01110, A CORPORATION OF OHIO.

PATENT OFFICE.

OF AKRON, OHIO, ASSIGNOR TO THE GENERAL TIRE & RUBBER BOX-MAKING MACHINE.

Specification of Letters Patent. Patented Sept. 27, 1921-- Application filed April 9, 1920. Serial No. 372,624.

To all whom it may concern:

Be it known that I, HAROLD A. DENMIRE, a citizen of the United States, residing at- Akron in the county of Summit and State 6 of Ohio, have invented a certain new and useful improvement in Box-Making Machines, of which the following is a full, clear, and exact description.

This machine :is constructed for making 10 boxes out of cardboard blanks, like that which is shown in Figure 2; and in order to understand the machine as shown and described herein it is desirable to first consider the construction and shape of these 1 box blanks.

I Each blank comprises a rectangular portion a which becomes the bottom of the box; the-integral side flaps b, b, which become the sides of tlfe box, and the integral end flaps c, which become the outside end members of thefinished box. At each end of each side flap the blank is formed with a flap d the length of which is slightly less than onehalf the width of the box. The two flaps d adjacent an end, of the blank are to be folded so that, in the finished box, they lie inside of the outside end flaps c. The blank is scored around the bottom portion a so that the flaps will certainly bend along the lines which mark the outlines of the bottom member; and the blank is also scored along the lines on which the inside end flaps all must be bent out of the .plane of the side flaps b; and a narrow strip of the cardboard is cut from between the flaps d and c, whereby they are disconnected and the notches g are formed between them.

The machine shown is organized so that it -will bend the side flaps up into positions at right'angles to the bottom, and will bend the inside end flaps toward each other at each end of'the box, and'int o'positions at right angles to both the bottom and sides; will apply glue to the upper surfaces of the out- 4 side end flaps c, and will bend those end flaps up outside-of and into contact with the inside flaps and will press and hold the glued surfaces in contact until the glue sets.

The invention consists in the construction and combination of parts by which the boxes are made into blanks as described, all as herein shown and hereinafterdescribed and 1 definitely pointed out in' the appended claims.

In the drawing, Fig. 1 is a sectional plan tical guide rods view of the machine, the section being in the plane of llne 11* on Fig. 4; Fig. 2 is a plan View of the bed of the machine with a blank resting thereon in position to be folded up when the plunger descends; Fig. 3 is, a sectional side elevation in the plane indicated by the line 33 onFi 1; Fig. 4 is a sec tional end elevation in t e plane of line 4-4 on Fig. 1. Fig. 5 is a perspective view of one end of a partly formed box, this view showing the position which the different parts of the blank will assume at one stage of the bending process performed by the machine.

Referring to the parts by reference char acters, -10 represents the horizontal main bed plate through which is a rectangular vertical hole 12 in which the folded up box fits slidably but snugly. A rectangular tube 11 of the same internal dimensions as the hole 12, is secured to the bed plate in registering relation to said hole and extends down therefrom, so as to form a chute down which the finished boxes are forced, as, one by one theyare pushed down through said hole.

30 represents a, vertically reciprocating rectangular plunger of slightly smaller dimensions than the hole 12 so that it and a folded up-box may descend into said hole.

The plunger is located over the hole 12, so that on its down stroke it will enter the hole carrying with it the box-made by folding one of the described box blanks. Any suitable means may be employed to impart to thls plunger its vertical and properly guided reciprocating movement. .For example, a shaft v 31 may be rotatably mounted upon the frame member 32; a crank 33 may be fixed to this a shaft; and this crank may be connected by a connecting rod 34 with the plunger. er-

35 carried by the plunger may slidably fit in vertical sleeves 36 which are fixed to the frame of the machine.

Upon the bed plate adjacent the four corners of the hole 12 are four blank supporting and flap bending blocks 19, the upper surfaces of which are all in the same plane, a slight distance, say half an inch, above the to of the .bed plate. 7

These bloc s 19 are so placed that they engage beneath 'the inside end flaps d but do not project beneath the side flaps b, nor the outside end flaps c of the blank in the machine. It is desirable that these blocks be very close to the corners of the rectangular hole; and in the best construction, as shown, these blocks have one vertical wall 19 which is in substantially the same vertical plane as the adjacent end wall of the hole 12; and another vertical wall 19 which is in substantially the same vertical plane as the adjacent side wall of said hole 12. The line in which the two vertical walls 19, 19 intersect is in substantial alineinent with the line in which the adjacent end and side walls of the hole 12 intersect.

The blanks are not usually stiff enough to maintain their shape when supported by these flaps only; and therefore it is desirable that other blank supporting platforms be provided adjacent the two sides and ends of the hole. As shown the blocks or platforms 15, 16, are secured on the bed plate a slight distance away from the two sides respectively ofthe hole 12, but with their edges parallel with said sides; and these platforms are in such position that a part, say about one-halfof each of the side flaps b, are respectively supported by these two platforms. At the ends of the hole are two other blank supporting platforms 17, 18, the edges of which are set back a slight distance from the ends of the hole, and-these platforms are so placed that rather more than half the end flaps 0 will be supported upon them when the blank is put into the machine.

Two receptacles 40 for containing liquid glue are suspended from the machine frame adjacent the ends of said hole and over the bed plate. Each of these is provided with two drip pipes 41, the lower discharge ends I of which are so placed that they will drip for catching the glue which flows from the drip pipes through these holes.

Near each end of the bed platea guide and stop block 50 is fixedly secured. These stop blocks are above the planes of the platforms 17, 18. The vertical edges 51 of these blocks which face the ends of the hole 12, serve as guides to aid in properly placing the blanks 1n the machine, the ends of the outside end flaps 0 being in substantial engagement with these edges. On these blocks also are stop shoulders 52 against which the rear edges of the flaps c engage whereby the blanks are sto ped in the proper position. a

n utilizing the machine for the stated purpose, a blank is put into the machine, and it is readily placed in the proper position by causing the ends of the outside end flaps to pass between the vertical faces 51 of the two guide blocks 50, and until the Below i the corners of the end flaps so as to overlie the outside end fla s.

rear edges of said flaps come into engagement with the shoulders 52 on said guide blocks. When the blank is inthis position the glue drips slowly onto the upper faces of the outside end flaps c, c. The plunger the botimme'diately comes down, forcin he inside tom of the blank downward.

end flaps d, (1, being supported on the bending blocks 19, can not move down with the bottom portion of the box, and therefore these end flaps are bent up out of the plane of the side flaps of which they are parts. The side flaps b, b, and the outside end flaps (2,0, are not so rapidly bent up. Therefore,

when they are bent up,as they will be as the plunger descends,- the outside end flaps c, 0, will overlie the inside end flaps d, d;

and the bending up of the outside end flaps.

will have been side end flaps. When the plunger is withk W drawn this finished box is left in the chute referred to. When another similarly bent blank is pushed down through the hole it engages the top of the previously formed box and pushes it down through the chute; these operations are continued and one by one the boxes are forced out of the lower end of the chute. This chute is, however, long enough to hold each box long enough for the glue to set so as to hold the flaps in the stated relation with one another when the box is discharged.

As a precautionary expedient to insure that the outside end flaps shall not be folded u in advance ofthe inside end ,fiaps, the b ocks 50 are rovided with flanges 56 which extend therefi'om toward the hole 12 and slightly overhang the edges of the'outside end flaps 0. These flanges 56 will, when the plunger begins to descend, and when therefore the fla begin to bend, prevent the outside end aps from bendin up until after have been bent Having described my invention, claim 1. In a box making machine, the combina tion of a bed plate having a rectangular hole therethrough, and four immovable blank supporting fia-p'bending blocks secured upon sald bed plate adjacent the four corners of said rectangular hole and in position such I that they will engage with and support only the inside end fla s of the described box .blank when said b ank is in position to be operated upon by the machine, and a ver tically reciprocatlng plunger for forcing the box blanks down into said hole and thereby causing the flaps substantially as herein described.

to be bent into positions ing 2. In a box making machine, the combination of a bed plate having a rectan lar hole therethrough, and four immova 1e blank supporting fiapbending blocks secured upon said bed plate adjacent the four corners of said rectangular hole and in position such that they will engage with and support only the inside end flaps of the described box blank when said blank is in position to be operated upon b the machine, said blank supporting and ap bending blocks having one vertical wall which is 1n substantially the same vertical plane as the end wall of said rectangular hole and having another vertical wall which is in substantially the same vertical plane as the adjacent side wall of said rectangular hole,said surfaces meetin a line which is substantially coincident with the line in which the adjacent side wall and end wall of said rectangular hole meet.

3. In a box making machine, thecombination of a bed plate having a rectangular hole therethrough, and four immovable blank supporting flap bending blocks secured upon said bed plate-adjacent the four corners of said rectangular hole and in position such that they will engage with and support only the inside end flaps of the described box blank when said blank is in position to be operated upon by the machine, a vertically reciprocating plunger for forcing the box blanks 'down into said hole and thereby causing the flaps to be bent into position substantially as herein described, and immovable means located over the outside end flaps for dripping glue onto the upper surfaces of the outside end flaps of said blank while the blank is in the machine.

4. In a box making machine, the combination of a bed plate having a rectangular hole therethrough, and four immovable blank supporting flap bending blocks secured upon said bed plate adjacent the four corners of said rectangular hole and in position such that they will engage with and support only the inside end flaps of the described box blank when said blank is in position to be operated upon by the machine, a vertically reciprocating plunger for forcing the box blanks down into said hole and thereby causing the flaps to, be bent into position substantially as herein described, means located over the outside end flaps for discharging glue onto the upper surfaces of the outside end flaps of said blank while the blank is in the'machine, and a rectangular chute whose dimensions are substantially the same as the dimensions of the rectangular hole, said chute being secured in osition to form a downward continuation 0' said hole.

5. In a box making machine, the combination of a bed plate having a rectangular hole therethrough, and four blank supporting flap bending blocks secured upon said bed plate cated respectively in front 0 adjacent the four corners of said rectangular ho e and in position such that they will engage with and support only the inside end flaps of the described box blank when said blank is in position to be operated upon by the machine, a vertically reclprocating plunger for forcing the box blanks down into said hole and thereby causing the flaps to be bent into position substantially as herein described, drip pipes connected Wlth a source of glue supply with their discharge ends arranged over the outside end flaps of said blank, there being holes through the bed plate beneath the discharge ends of said drip pipes, and receptacles arranged below said holes for catching the glue which drops through them 6. In a box making machine, the combination of a bed plate having a rectangular hole therethrough, and four immovable blank supporting flap bending blocks secured upon said bed plate adjacent the four corners of said rectangular hole and in position such that they will engagewith and support only the inside end flaps of the described box blank when said blank is in position to be operated upon by the machine,-said blank supporting and flap bending blocks having one vertical wall which is in substantially the same vertical plane as the end wall of said rectangular hole and having another vertical wall which is in substantially the same vertical plane as the adjacent side wall of said rectangular hole, two platforms located respectively in front of and behind said rectangular hole, and a short distance back from the edges thereof and in position to support the side flaps of said blanks.

7. In a box making machine, the combination of a bed plate having'a rectangular hole therethrough, and four immovable blank supporting flap bending blocks secured upon said bed plate adjacent the four corners of said rectan ular hole and in position such that they Wlll engage with and support only the inside end fla s of the described box blank when said b ank is in position to be operated upon by the machine,--.said blank supporting and flap bending blocks having one vertical wall which isin substantially 118 vertical wall which is in substantially the same vertical plane as the adjacent side wall of said rectangular hole, two latforms loand behind said rectangular hole and a short distance back from the edges thereof and in position to support the side flaps of said blanks, there being also platforms adjacent the ends of said rectangular hole set back a short distance therefrom for supporting the outside end flaps of said blank;

8. In a box making machine, the combination of a bed plate having a rectangular hole therethrough, and four blank supporting flap bending blocks secured upon said bed plate adjacent the four corners of said rectangular hole and in position such that they will engage with and support only the inside end flaps of the described box blank when said blank is in position to be operated upon by the n1acl1ine,--said blank supporting and flap bending blocks having one vertical wall which is in substantially the same vertical plane as the end wall of said rectangular hole and having another vertical wall which is in substantially the same vertical plane as the adjacent side wall of said rectan ular hole, two platforms located respectively in front of and behind said rectangular hole, and a short distance back from the edges thereof and in position to support the side flaps of said blanks, the pair of blocks adjacent each end of Said rectangular hole 20 being adjustable toward and from each other.

In testimony whereof I hereunto aflix my signature.

HAROLD A DENMIRE. 

